# Tower Defense vs Spire

The clearest difference is in-app purchases: Spire at none against Tower Defense's 4. Spire also leads on iOS requirement (16.4 vs 26.2). Tower Defense's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Tower Defense sells 4 one-off in-app purchases. Spire asks for nothing beyond the download.

## The numbers

| Metric | Tower Defense | Spire |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | — |
| Size | 23 MB | 69 MB |
| Requires iOS | 26.2 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Jonathan Taveras](https://appshunter.io/developer/1270478820) | [Cristopher Guido](https://appshunter.io/developer/1849716676) |

## What reviewers say

### Tower Defense

[App page](https://appshunter.io/ios/app/tower-defense-void/id6762655620)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $2.99 | one-time |
| Standard Pack | $9.99 | one-time |
| Pro Pack | $24.99 | one-time |
| Elite Pack | $69.99 | one-time |


### Spire

[App page](https://appshunter.io/ios/app/spire-tower-stack/id6781474812)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Tower Defense free?

Tower Defense is free to download, with in-app purchases available.

### Is Spire free?

Spire is free to download, with no in-app purchases.

### Do Tower Defense or Spire have ads?

Spire shows ads; Tower Defense does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*